[Length 52 in. Wingspan 66 in.]

These Tundra Swans in flight were photographed at Quivira NWR, Great Bend, Kansas. Photo taken with a AF-S VR Nikkor 300mm f/2.8G IF-EDlens + Nikkor TC20E II 2x Teleconverter (EFL=900mm) on a Nikon D300 camera. (Date: March 16, 2010)

[Length 52 in. Wingspan 66 in.]

This Tundra Swan in flight was photographed at Quivira NWR, Great Bend, Kansas. Photo taken with a AF-S VR Nikkor 300mm f/2.8G IF-EDlens + Nikkor TC20E II 2x Teleconverter (EFL=900mm) on a Nikon D300 camera. (Date: March 16, 2010)

[Length 60 in. Wingspan 91 in.]

Whooper Swans breed across northern Europe (including Iceland) and Siberia. This one, however, is a captive bird which was photographed on a ranch lake in the Texas Hill Country near Kerrville, Texas. Photo taken with a 300mm f4.0 EDAF AF lens on Kodachrome 200 film. (Date: April 2000)

[Length 60 in. Wingspan 91 in.]

This Whooper Swan was photographed at Hokkaido, Japan. Photo taken with a Nikkor EDAF 300 f4.0 lens on Kodachrome 200 film. (Date: January 1996)

[Length 60 in. Wingspan 91 in.]

Whooper Swans breed across northern Europe (including Iceland) and Siberia. This one was photographed flying along the coast near Nemuro-Shibetsu on the island of Hokkaido, Japan, a traditional wintering area. Photo taken with a 300mm f4.0 EDAF AF lens on Kodachrome 200 film. (Date: January 1996)

[Length 60 in. Wingspan 91 in.]

These Whooper Swans were photographed at Hokkaido, Japan. Photo taken with a Nikkor EDAF 300 f4.0 lens on Kodachrome 200 film. (Date: January 1996)

[Length 60 in. Wingspan 91 in.]

This Whooper Swan was photographed at Hokkaido, Japan. Photo taken with a Nikkor EDAF 300 f4.0 lens on Kodachrome 200 film. (Date: January 1996)

[Length 60 in. Wingspan 91 in.]

These two juvenile Whooper Swans, part of a large flock of adults, were photographed at Hokkaido, Japan. Photo taken with a Nikkor EDAF 300 f4.0 lens on Kodachrome 200 film. (Date: January 1996)